Across
- 4. Dwarf planets galore!
- 5. Shortest orbital period
- 6. Lost of asteroids
- 9. The biggest planet
- 10. Big and bright
- 12. Has iron oxide in the dust
- 13. Not a planet
Down
- 1. Similar in size to Earth
- 2. Discovered by math
- 3. Where comets come from
- 7. "Nice rings!"
- 8. The blue planet
- 11. Sideways planet